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Urol Ann. 2019 Jul-Sep;11(3):257-260. doi: 10.4103/UA.UA_40_18.

Outcome of early experience of Miniperc technique in pediatric age group.

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Department of Urology, Minia University Hospital, Minia, Egypt.
Department of Urology, Beni-Suef University, Beni Suef, Egypt.
Department of Urology, Cairo University, Giza, Egypt.



The aim of this study is to report our experience with the Miniperc technique for treatment of renal stone in pediatric age group.

Materials and Methods:

From August 2012 to January 2015, 34 patients aged <15 years with renal stones <3 cm underwent Miniperc technique were included in our study. The procedure was done through 14 Fr sheath using 8/9.8 Fr semi-rigid ureteroscope, holmium laser, and pneumatic lithotriptor for stone fragmentation. Stone-free rate (SFR), operative time, hospital stay, and complication rate were evaluated.


A total of 34 Miniperc techniques were performed on children with a mean age of 8.8 ± 3.7 years. Stone size varied from 18 to 30 mm (mean 23 mm). Mean operative time was 50 min. The mean hospital stay was 48±12 hours. The overall SFR was 82.4% which increased after secondary procedures to 94%. Two postoperative complications recorded in the form of sepsis and bleeding that required no blood transfusion.


Our initial experience concluded that Miniperc technique is a safe and effective treatment option for renal stones in pediatric population.


Miniperc; pediatric age group; renal stones

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